I have been feeding my son exlusively pumped breast milk. (He doesn't nurse). We're planning to fly from San Francisco to Hong Kong next September (assuming there are no international pandemics making us want to cancel). How will I survive the flight if I normally pump every 3-5 hours except at night time when I go 6 hours? I've had clogged ducts before and I don't want to experience that. I've considered using the battery pack on my pump, but I'm afraid of how the airline staff and flying neighbors would react. Any ideas?